Monitoring criteria
WARNING: This page does not describe the selected car, but rather 53 other vehicles, including the 2013 BMW X6 M, 2013 BMW X5 M, 2013 BMW M6, 2013 BMW M5, and 2013 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
the sensor voltage is higher than 1.899 V and less than 2.1 V or less than 2.1 V in overrun mode.
Potential problem source(s):
-Defect in wiring harness to pre-catalyst oxygen sensor 2
-Oxygen sensor 2 forward of catalytic converter defective
-Defective DME
-Defective catalytic